you, one of the most feared criminals was carrying a dead body out of a building, throwing it into a furnace.. you did your job just fine. or, you think so?.. the whole time, you left a single blood stain on the staircase.. which caused Hwang Hyunjin, one of the best detectives to be sent to investigate.

Hyunjin: hm.. these are fresh.. the murderer or the body has to be near.. he says as he looks at the bloodstain..